Commutator-brush carrier for electric motors



(No Model.)

C. J. VAN DEPOELE.

COMMUTATCR BRUSH CARRIER ECR ELECTRIC MOTORS. N0.396,314. Patented Jan.l5, 1889 f w vmemboc, Win l n! E H'" C'/arlesv f Va'ne/@oel, 6a, I I e@3511? w 60,714 muy.

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UNITED STATES CHARLES J. VAN DEPOELE,

PATENT GEETCE.

OF LYNN, MASSACHUSETTS.

COMMUTATOR-BRUSH CARRIE-R FOR ELECTRIC MQTORS.

SPECIFICATION forming part of Letters Patent No. 396,314, dated Januaryl5, 1889. Application tiled February 3, 1887. Renewed November 24, 1888.kSerial No. 291,801. (No model.)

To @ZZ whom z5 may concern.'

Be it known that l, CHARLEs J. VAN DE POELE, a citizen of the vUnitedStates, residing at Lynn, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements inCommutator-Brush Carriers for Electric Motors, of which the following isa specification, reference being had therein to the accompanyingdrawings.

The present invention relates to a novel and improved construction andarrangement of the mechanism for holding and adjusting the commutatorbrushes of an electro -dynamic motor upon and around the connnutatorthereof; and it consists in providingI a duplicate set of brushessupported in a frame, the frame itself being movable radially upon itssupport, so as to bring the brushes to any desired position upon theperiphery of the commutator, the two sets of brushes being so mountedthat by a single movement of an auxiliary handle either pair of the twosets of brushes may be brought into actual contact and operativerelation with the surface of the commutator. The two sets of brushescontrol the forward or backward rotation of the armature of the motor,and are quickly brought into or thrown out of action, they being thenradially adjusted upon the commutator to produce the desired effect.

The construction and arrangement of my improvedcommutator-brush-carrying frame will be hereinafter fully set forth.

In the accompanying drawings, Figure l is a vertical elevation, partlyin section, showing my improved commutator-brusli-carrying frame,looking from the direction of the armature. Fig. 2 is an elevation,partly in section. Fig. 3 is a top view on the line 3 3 of Fig. 2. Fig.e is a top view on the line t e of Fig. 2. Fig. 5 is a sectionalelevation on the line 5 5 of Fig. at, and Fig. 6 is a sectionalelevation showing one set of brushes in contact with t-he commutator andthe operative rela- 5 tion of the parts.

Similar letters denote like parts throughout. A is the armature-shaft,and B is the outer main bearing or journal therefor, upon any convenientportion of which (in this instance the inner end, h) is mounted ahand-lever, C, mounted rotatively thereon and held in posil tion bymeans ot a washer, D, secured to the bearing B. A setscrew, D', is alsoprovided, by means of which the hand-lever C can be locked in anydesired position-that, for example, in which the motor produces thedesired results or its movement retarded in a greater or less degree.The commutatorE is shown in section in Fig. G and in dotted lines inFig. 2.

To the lever C are secured in correspoinly ing positions on oppositesides of the armatureshaft spindles e, which are thoroughly insulatedfrom said hainl-lcver and rigidly secured thereto. Upon the inner endsof the spindles e are pivotall y mounted the oscillating ln'ush-carryingframes F G, the frame F being' provided with two brushes, ff', which arefitted obliquely into the ends of t-he oscillating frames and held inposition by setscrews H. A similar set of brushes, g g', is secured inthe frame G, and when in their central positions the brushes projectaway from the surface ot' the commutator on both sides. The set-screws Hmay be provided with jam-nuts 7i. From the outer ends of the frames Fand G extend binding-posts l J, both binding-posts l being of onepolarity and the posts J of the opposite, the line-wiresI orworkingconductors of one polarity being connected to both ot' the postsl and those ol' the opposite polarity to both of thc. posts J.

To the extremities of the posts lare pivotally attached links K,preferably of insut lating material; but. they may be of metalthoroughly insulated from the landing-posts, which links extend downwardand connect. in a similar manner with the binding-posts J, thereby soconnecting' the rocking frames F and G that they will move in exactaccordance with each other, and when so moved the two opposing brushes fg, constituting a set, will be brought into contact with the surface ofthe commutator, and when moved in the opposite direction the opposite 'iset of brushes, f g, previously out of contact, i will now be broughtupon the commutator and the brushes fg removed therefrom, there bychanging` the positions of the poles of the armature and reversing thedirection of its rotation. A second handle, L, preferably of insulatingmaterial, is securely attached to l l i i l ICO the upper one of therocking brush-carrying| frames F, and extends upward parallel with andabout to the saine height as the hand-lever C, being arranged forconvenient coaction therewith. The lever C is provided with i sitions ofthe respective poles of the armature i The handle L i and its directionof rotation. is then secured in posit-ion by the entrance of thespring-latch m into one or other of the notches in the quadrant ,whichshould be at such a point as will cause the commutatorbrushes to bepressed aga-in st the oommutator with the desired pressure. Then inposition, the speed of the motor and the quantity of current permittedto flow therethrough is regulated by moving the handle C, and with itthe brushes, around the commutator, as is ordinarily done with a singlepair of brushes.

Various modifications in the construction and arrangement of the partsmay be made without in any way departing from the spirit of myinvention, and I do not therefore limit myself to the exact details ofconstruction and arrangement shown and described.

l. In an electric motor, the combination, with acircumferentially-movable lever, insulated commutator-lniush-carryinframes pivotally mounted with respect to said lever, insulatedconnections extending between the pivoted frames for moving bothsimultan eously, and a double set of commutator-brushes secured in saidframes and adapted to be interchangeably brought into operative relationwith the conmiutator-cylinder by the movement of either one of saidframes, and to be moved about the commutator, as desired, by themovement of the hand-lever, substantially as described.

2. In an electric motor, the combination, with acircnmferentially-movable lever, insulated commutator-brush-carryingframes pivotally mounted with respect to said lever, insulatedconnections extending between the pivoted frames for moving bothsimultaneously, a double set of commutator-brushes secured in saidframes, and an adjusting-lever connected to one of said frames andarranged to be adjustably secured with respect to the pivotedlever,whereby said brushes may beinterchanged upon any desired portionof the commutator cylinder, substantially as described.

3. In an electric motor, the combination, with a fixed support, ofa-eommutator-brushcarrying hand-lever .radially movable thereon, a pairof commutator-brusli-carrying frames pivotally mounted upon said lever,a double set of commutator-brushes secured to each of said frames, andconnections between said frames, whereby when one set of brushes isplaced in contact with the commutator the other set is lifted therefrom,the brushes when set being movable around the commutator by means of thehand-lever, substantially as shown and described.

4. In an electric motor, the combination of the hand-lever C, radiallymovable upon the bearing B and around the armature-shaft, the pivotedcommutator-brusli-carrying frames F G, secured to said lever, links K,extending between the said pivoted frames, an auxiliary hand-lever, L,extending upward from the frame G and provided with a latch-springarranged to engage the notches of a rack carried by the bar @,wherebywhen the handle L is moved to right or left of the bar C thebrush-carrying frames will be rocked andthe.

set of commutator-brushes controlling the desired direction of rotationbe broughtinto operative position upon the commutator, substantially asshown and described.

5. In an electric motor, the combination of the lever C, pivoted uponone of the main bearings thereon and provided with the rack M, of thepivoted frames F G, secured to the lever C on opposite sides of saidsupport, binding-posts I, extending from said frames, and links K,extending between the opposite sides of the binding-posts, and therebymechanically connecting said frames, substantially as shown anddescribed.

In testimony whereof I hereto affix my signature in presence of twowitnesses.

CHARLES J. VAN DEPOELE. lVitnesses: FRANKLAND J ANNUs, H. A. LAMB.

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